Ariston Clas 24 FF Installation And Servicing Instructions page 71

Auto Function
The AUTO function serves to optimise boiler performance, while maintaining an optimum radiator temperature and
maximum user comfort. It ensures the building stays at the ideal temperature, whilst saving energy.
The principle is that the water temperature at the boiler outlet is automatically adjusted, depending on the interior
ambient temperature.
Control Panel
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CLAS 24 FF
CLAS 30 FF
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Legend:
1. Display
2. RESET button
3. Red LED (illuminated = boiler lockout)
4. Heating System Pressure Gauge
5. Selector knob for Summer/Winter Central Heating
Temperature Adjustment Knob
6. Programming "-" key
7. M /O button
ENU K
8. E button
SC
9. Programming "+" key
CLAS SYSTEM 21 FF
CLAS SYSTEM 28 FF
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10. Domestic Hot Water adjustment knob (COMBI models)
11. Time clock (optional)
12. ON/OFF Switch
13. "COMFORT" Function L.E.D (COMBI models)
Heating only L.E.D (SYSTEM models)
14. Green led (auto function activate)
15. A button (to active Thermoregulation)
UTO
16. COMFORT button (COMBI models)
Heating only button (SYSTEM models)
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user' manual
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